#ifndef __STOCK_H__
#define __STOCK_H__

#include <iostream>

class Stock1
{
public:
    void Sell()
    {
        std::cout << "股票1卖出" << std::endl;
    }
    void Buy()
    {
        std::cout << "股票1买入" << std::endl;
    }
};

class Stock2
{
public:
    void Sell()
    {
        std::cout << "股票2卖出" << std::endl;
    }
    void Buy()
    {
        std::cout << "股票2买入" << std::endl;
    }
};

class Stock3
{
public:
    void Sell()
    {
        std::cout << "股票3卖出" << std::endl;
    }
    void Buy()
    {
        std::cout << "股票3买入" << std::endl;
    }
};

#endif